Santa Fe Northern made from two Aristo Pacifics Here is a Northern bashed from 2 Aristo Pacifics. This was done for my by Rex Ammerman. I will put some much better pictures up in the future. What a beauty! Here it is running at Rex's place Misc notes: The 8 screws that hold the 2 halves of the motor block together have a thread length of .3" and thread diameter of 0.9" (outer diameter)